JP4139918B2 - Vacuum cleaner tube equipment that can be plugged in - Google Patents

Abstract

The invention relates to a plug-in vacuum cleaner hose arrangement ( 10 ), comprising a socket ( 15 ), formed from a collar piece ( 12 ), in which a hose push-fit end ( 13 ) is detachably held, by axially plugging in to a clip-lock. An operating slide ( 17 ), comprising a retaining surface ( 26 ) runs axially on the collar piece ( 12 ) and may be axially displaced in both opposing axial directions (e, a) about a neutral axial position for the retaining surface ( 26 ) thereof, against a spring force (by 18 ). In said neutral axial position the retaining surface ( 26 ) locks the clip body (S) and releases the same when displaced from the neutral position thereof by any movement. The connection is produced by a first directing surface ( 41 ) on the front end of the hose push-fit end ( 13 ) and opening the connection is performed by a second directing surface ( 43 ) formed by the locking recess (T) of the hose push-fit end ( 14 ). Said arrangement ( 10 ) permits a convenient operation, both on attaching and detaching the connection.

Description

[0001]
The present invention relates to a vacuum cleaner tube device that can be plugged in according to the superordinate concept of claim 1. Such pluggable vacuum cleaner tube devices known from public prior use are used for separable connection of two tube sections through which air passes.
[0002]
For example, such a vacuum cleaner tube device that can be plugged in can connect the tubular transition part to a suction tool such as a suction nozzle, an absorption brush or the like. On the other hand, such a vacuum cleaner tube portion can also be used to detachably connect, for example, a handle provided at the free end of the suction hose to the tube insertion portion of the telescopic tube device.
[0003]
In a vacuum cleaner tube device that can be plugged in by public prior use, a rocking piece is supported jointly outside the socket part, one end of which receives a spring load in the locking direction, radially inward It has a locking body that faces, and this locking body passes through the socket part and fits into the locking recess at the end of the pipe formed by the cut or passes through the locking recess. The other end of the swing piece is configured as an operation key.
[0004]
It has been found that the above-described known vacuum cleaner tube device capable of plug-in connection is actually widespread and effective. However, there is a desire for a more comfortable handling when connecting and disconnecting the bayonet connection.
[0005]
Starting from the pluggable vacuum cleaner tube device known from the public prior use as mentioned at the outset, the problem underlying the present invention is to develop the known device and plug-in connection The combination and separation of the parts should be handled more conveniently than before.
[0006]
According to the present invention, in connection with the features of the superordinate concept of claim 1, the problem is that the operating slide body having the blocking surface is guided in the socket portion in the axial direction, and the operation slide bodies are opposite to each other. In both axial directions, starting from the central axial position of the blocking surface, each can be moved against the spring return force, the blocking surface being in its neutral axial position and the locking body in its locked position Holding and releasing the locking body when moving from the neutral axial direction position to the unlocking direction, a first control surface is attached to the end surface of the tube insertion end, and the tube insertion end to the insertion receiving portion is attached. During the insertion (arrow e), the first control surface moves the locking body together with the socket part in the tube insertion direction with respect to the blocking surface, in which case the locking body is unlocked, the latter in the locking recess A second control surface, which is released for separable snap locking and attached to the locking recess, During withdrawal of the pipe insertion end of the plug receiving portion, it moves in the withdrawing direction of the lock body with respect to blocking surface with sockets moiety is solved by that time unlocking.
[0007]
The device according to the invention allows the following advantageous handling:
In order to connect the plug-in connection part, the operation sliding body guided in the axial direction is held by the socket part with one hand, and the pipe insertion end part is inserted into the insertion receiving part in the plug-in direction with the other hand. do it.
In this case, the first control surface of the tube insertion end hits the locking body at the locking position without requiring additional operation handling, and the locking body together with the socket portion is moved in the axial direction from the operation sliding body. Move away. In this case, the blocking surface of the operating sliding body releases the locking body, so that the locking body can snap into the locking recess.
Subsequently, the locking of the locking body is released with one hand, and then the operating sliding body is returned to the neutral axial position of the blocking surface by one of both spring return forces, and thus the locking of the blocking surface. This is done automatically by returning to position.
When the other insertion connection is separated, it is sufficient to fix the device to the operating slide with one hand and to pull the tube insertion end from the insertion receiving part with the other hand. At this time, the second control surface attached to the locking recess moves the locking body together with the socket portion in the pulling direction with respect to the blocking surface and simultaneously unlocks the locking body.
[0008]
In another configuration of the present invention, the operating sliding body forms a blocking projection that faces in a radial direction toward the outer peripheral surface of the socket portion, and the blocking projection has a blocking surface.
[0009]
When forming the blocking protrusion, according to the present invention, the blocking protrusion, which tapers in the radial direction toward the socket portion, has a substantially truncated pyramidal cross section, and the ceiling surface of the blocking protrusion forms a blocking surface and is opposite to each other. The side surfaces of the blocking protrusions that are inclined with respect to the two axial directions form a sliding guide surface with respect to the locking body.
[0010]
According to the present invention, the operating slide body has a substantially claw-shaped protrusion that protrudes substantially radially inward toward the socket portion, and the claw opening of the protrusion is opposite to the bar springs held by the socket portion. By accepting a spring range which can be deflected in both axial directions, both spring return forces which are opposite to each other in the axial direction are provided.
[0011]
The simplification of handling provided by the pluggable vacuum cleaner tube device according to the invention is optimized by the fact that the operating slide forms an operating sleeve which surrounds the socket part with its entire circumference.
[0012]
Further, the present invention is suitable, but not compulsory, so that the end face of the tube insertion end is retracted to taper at least partly around it to form a first control surface. I am considering. In principle, the device according to the invention also functions when the end is configured invariably in the form of a cylinder and the end face thus present forms the first control surface.
[0013]
Another advantageous feature of the present invention that allows for flexible operation when connecting and disconnecting connections is a crucible in which the locking recess at the tube insertion end projects substantially radially toward the tube center. Forming a dip, and the small pot-shaped locking recess has a substantially frustoconical cross-sectional profile.
[0014]
Finally, the side surface of the small pot-shaped locking recess adjacent to the end surface of the tube insertion end portion forms the second control surface.
[0015]
Further features of the invention can be seen from the additional dependent claims.
[0016]
The drawings show advantageous embodiments of the invention.
[0017]
The vacuum cleaner tube device that can be inserted and connected, indicated by reference numeral 10 in the drawing, has a tubular nozzle connecting tube piece 11 having a socket portion 12 and a tube insertion end 13 of a suction tube, for example, an expandable inner tube 14. Instead of the telescopic inner tube 14, a telescopic outer tube can also be provided.
[0018]
The tube insertion end 13 is received by an insertion receiving portion 15 formed by the socket portion 12. The insertion direction is indicated by e and the withdrawal or separation direction is indicated by a.
[0019]
The operation sliding body configured as the operation sleeve 17 is guided by an axial guide means (not shown) such as a groove / key device so as to slide in both directions e and a on the outer periphery of the socket portion 12 so as not to rotate.
[0020]
The nozzle connection piece 11 forms, for example, an end region 16 which is shown only schematically for a suction nozzle and a suction tool such as a suction brush.
[0021]
The nozzle connecting piece 11 is made of plastic in the illustrated embodiment, and the socket portion 12 which is also coupled together and the operation sleeve 17 which is guided so as to slide on the socket portion 12 are also made of plastic. The telescopic inner tube 14 is made of steel in the illustrated embodiment. Of course, materials for other purposes can also be applied to the illustrated embodiment or embodiments modified by the present invention.
[0022]
The annular bar springs 18 surrounding the socket part 12 are both held at their clamping ends 19 by support blocks 20 formed by the socket part 12 respectively. In FIG. 3, only one clamping end 19 and support block 20 are shown in broken lines. The operation sleeve 17 forms a substantially claw-shaped projection 21 projecting inwardly in the radial direction toward the socket portion 12, and the claw opening 22 of the projection 21 extends in both axial directions e and a of the bar spring 18. A deflectable spring range 23 is received.
[0023]
In order to allow the spring range 23 to be deflected in the axial directions e and a, a movement space 31 is cut out in the outer peripheral part of the socket part 12.
[0024]
The operating sleeve 17 has a blocking projection 25 which faces the outer peripheral surface 24 of the socket portion 12 in the radial direction, and this blocking projection 25 forms a blocking surface 26. The blocking protrusion 25 has a substantially truncated pyramidal cross section that tapers toward the socket portion 12 in a substantially radial direction, and the ceiling surface of the blocking protrusion 25 forms a blocking surface 26.
[0025]
The side surfaces of the blocking projections 25 that are inclined with respect to the opposite axial directions e and a form the sliding guide surfaces 27 and 28 for the sliding guide facing surfaces 29 and 30 of the blocking body, indicated as S as a whole. Yes.
[0026]
The blocking body S is a component part of a tongue-like member indicated by Z as a whole. This member is cut out from the wall of the socket part 12 and is provided adjacent to the end face 32 of the socket part 12. The reference numeral 33 is attached. The tongue-like member Z can be made to have intrinsic elasticity by the material so that it always takes the position shown in FIG.
[0027]
As with the blocking protrusion 25, the locking body S has a substantially truncated pyramidal cross section. The locking body S forms an annular blocking facing surface 34 corresponding to the blocking surface 26 of the blocking protrusion 25.
[0028]
The inner peripheral surface 35 of the socket part 12 starts from its end surface 32, opens into it, has a sliding guide groove 36 extending in the axial direction, and is stamped outwardly from the tube insertion end 13 in a substantially spring-like manner. A short axial longitudinal wrinkle 37 cooperates with the sliding guide groove 36.
[0029]
The short vertical wrinkle 37 stopper 38 that limits the axial length of the sliding guide groove 36 inward at the same time protrudes radially inwardly at the tube insertion end 13 into a locking recess T into a small crucible. It is ensured that the locking body S is engaged and snap-engaged. The small pot-shaped locking recess T or the small pot-shaped recess has a substantially frustoconical cross-sectional profile.
[0030]
The locking body S engages with the small pot-shaped locking recess T and has a cross-sectional contour corresponding to the small pot-shaped locking recess.
[0031]
Due to the tongue connection, the locking body S is guided by the socket part 12 so as to be movable in a substantially radial direction, and is movably connected to the socket part 12 with respect to at least opposite axial directions e and a.
[0032]
The operation mode of the vacuum cleaner tube device 10 that can be inserted and connected will be described below.
[0033]
In the drawing, the blocking surface 26 of the blocking protrusion 25 is in a neutral axial position, this position acting in the directions a and e and obtained by a spring return force provided by the bar spring 18. In this neutral axial direction position where the spring return force of the bar spring 18 does not act on the operation sleeve 17, the blocking surface 26 of the blocking projection 25 is aligned with the blocking opposing surface 34 of the locking body S, so that the locking body S is locked. In the position.
[0034]
Prior to the coupling of the device 10, the tube insertion end 13 is in the axially right front of the insertion receiving portion 15 and is then introduced by one hand into the socket part 12 in the insertion direction e, the other hand fixing the operating sleeve 17. It is possible that At this time, the first control surface 41 that is retracted in a conical shape hits the oblique sliding surface 44 of the locking body S configured in a truncated cone shape from the right, and the locking body S is brought into contact with the operation sleeve 17. , Together with the socket part 12 movably connected to the locking body S, it is pushed to the left in the direction e. The blocking opposing surface 34 of the locking body S is out of contact with the blocking surface 26 of the blocking protrusion 25, while the blocking body S is pushed away by the first control surface 41 into the receiving space Ae.
[0035]
Therefore, when the locking body S is unlocked and the short vertical wrinkle 37 hits the stopper 38 of the sliding guide groove 36, the locking body S is aligned with the small pot-shaped locking recess T. The hand releases the operating sleeve 17, and the operating force of the rod spring 18 causes the operating sleeve 17 to follow the movement of the socket portion 12 in the insertion direction e, whereby the snap locking process is completed.
[0036]
Therefore, the operating sleeve 17 returns in the direction e, but the sliding guide surface 27 of the blocking projection 25 is the small crucible-shaped locking recess formed by the sliding guide facing surface 30 with the locking body S initially in the receiving space Ae. Push into T. At the same time, the blocking surface 26 hits the blocking opposing surface 34.
[0037]
The separation of the device 10 shown in the drawing takes place as follows.
One hand surrounds the operation sleeve 17 and fixes it, and the other hand surrounds the telescopic inner tube 14 and exerts a tensile force in the direction a on the tube insertion end 13. At that time, the side surface 43 (and hence the second control surface) of the small pot-shaped recess T adjacent to the end surface 42 of the tube insertion end 13 hits the other oblique sliding surface 45 of the locking body S from the left. In this case, the blocking body S is moved rightward in the direction a, including the socket part 12 movably connected thereto. At that time, the second control surface 43 pushes the locking body S into the receiving space Aa. Therefore, the locking body S is unlocked, and the insertion end 13 can be completely pulled out from the socket portion side insertion receiving portion 15.
[0038]
The description of the operation described above shows that the connection and separation of the plug-in connection are performed in a very comfortable manner of operation.
[Brief description of the drawings]
FIG. 1 shows a vacuum cleaner pipe device that can be plugged in and formed by a tube-nozzle connecting portion and, for example, a pipe insertion end of an expandable inner pipe.
2 shows the apparatus according to FIG. 1 in an axial section enlarged from FIG.
FIG. 3 shows again the connection range according to FIG.
4 shows an enlarged detail corresponding substantially to the dashed circle indicated by D in FIG.

Claims (20)

A vacuum cleaner tube device (10) that can be plugged in,
Having a socket part (12) forming an insertion receiving part (15);
In this insertion receiving portion (15), the tube insertion end (13) is inserted in the axial direction in the insertion direction (e),
Held as the pipe insertion end (13) is Sunatsupu locking detachably in the plug receptacle (15) via a locking means (S, T),
Locking means (S, T) is, on the side of the sockets portion (12) is formed by a securing body (S) which is movably guided on this socket portion (12),
The locking means (S, T) are formed on the side of the tube insertion end (13) by a locking element (T) present on this tube insertion end (13) ,
The locking element (T) and the locking body (S) are detachably connected to each other ,
An operating slide (17) having a blocking surface (26) is guided in the axial direction in the socket part (12) ,
A first control surface (41) is attached to the tube insertion end (13 ) ,
During insertion of the pipe insertion end of the insertion receiving section (15) (13) of (arrow e), the first control surface (41), the tube engaging Tometai the (S) with respect to blocking surface (26) Move in the insertion direction (e)
At that time the first control surface (41) to unlock the locking body (S), in which released Example stop element (T) and separable Sunatsupu locking locking body (S),
A locking element is formed by the locking recess (T), and the locking body (S) is detachably engaged with the locking recess (T).
The operation sliding body (17) is held by the socket portion (12) and resists the return force of the spring (18) acting on the operation sliding body (17) from the neutral axial direction position of the blocking surface (26). Movable in opposite axial directions (e, a),
When the blocking surface (26) is in its neutral axial position, it holds the locking body (S) in its locked position,
When the blocking surface (26) moves from the neutral axial direction position to the unlocking direction, the locking body (S) is released,
A first control surface (41) is attached to the end surface (42) of the tube insertion end (13),
When the tube insertion end (13) is inserted into the insertion receiving portion (15) (arrow e), the first control surface (41) includes the locking body (S) together with the socket portion (12) and the blocking surface. (26) move in the tube insertion direction (e),
At this time, the first control surface (41) unlocks the locking body (S) and releases the separable snap locking locking body (S) in the locking recess (T). ,
A second control surface (43) is attached to the locking recess (T),
When the tube insertion end (13) is pulled out from the insertion receiving portion (15) (arrow a), the second control surface (43) is provided with the locking body (S) together with the socket portion (12) and the blocking surface. (26) It moves to an axial direction (a) with respect to (26), The locking body (S) is unlocked , The vacuum cleaner tube apparatus which can be inserted and connected.   The operating slide (17) has a blocking projection (25) that faces radially towards the outer peripheral surface (24) of the socket part (12), and this blocking projection (25) has a blocking surface (26). The vacuum cleaner tube device capable of being plugged in and plugged in according to claim 1.   The blocking projection (25), which tapers radially towards the socket part (12), has a substantially truncated pyramidal cross section, the ceiling surface of the blocking projection (25) forms the blocking surface (26) and is opposite to each other. The side surfaces of the blocking projections (25) inclined with respect to both the axial directions (e, a) of these form sliding contact surfaces (27, 28) with respect to the locking bodies (S). A vacuum cleaner tube device capable of being plugged in according to claim 2.   The operation sliding body (17) has a substantially claw-shaped protrusion (21) protruding substantially radially inward toward the socket part (12), and a claw opening (22) of the protrusion is formed in the socket part (12). 4. A spring range (23) that is deflectable in opposite axial directions (e, a) of the bar spring (18) held by the rod spring (18). Vacuum cleaner tube equipment that can be plugged in.   5. The pluggable connectable vacuum cleaner according to claim 1, wherein the operating slide forms a member (17) that at least partially encloses the socket part (12). Machine equipment.   6. A vacuum cleaner tube device with pluggable connection according to claim 5, characterized in that the operating slide forms an operating sleeve (17) which surrounds the socket part (12) with its entire circumference.   The socket part (12) and the tube insertion end (13) form axial guides (38, 37) with each other in the range of the insertion receiving part (15). 6. A vacuum cleaner tube device that can be plugged in according to one of the sixth items.   8. A vacuum cleaner tube device with pluggable connection according to claim 7, characterized in that the axial guide means are formed by a groove / key device (38, 37).   The tube insertion end (13) has an axial fin (37) projecting radially outward, and the socket portion (12) correspondingly has an axial groove (36) in its inner peripheral surface (35). 9. A vacuum cleaner tube device capable of being plugged in according to claim 7 or 8.   10. A vacuum cleaner tube device with pluggable connection according to one of claims 1 to 9, characterized in that the operating slide (17) and the socket part (12) form an axial guide means.   11. The vacuum cleaner tube device capable of being plugged in according to claim 10, wherein the axial direction guiding means is formed by a groove / key guiding device.   The end surface (42) of the tube insertion end (13) is retracted so as to taper at least a part of its periphery in order to form the first control surface (41). A vacuum cleaner tube device capable of being plugged in according to claim 1.   13. The locking recess (T) of the tube insertion end (13) forms a small vase-like recess that projects substantially radially towards the tube center. The vacuum cleaner tube apparatus which can be inserted and connected as described in one.   14. The pluggable vacuum cleaner tube device according to claim 13, characterized in that the small vase-like locking recess (T) has a substantially frustoconical cross-sectional profile. The side surface (43) of the small pot-shaped locking recess (T) adjacent to the end surface (42) of the tube insertion end (13) forms a second control surface. A vacuum cleaner tube device capable of being plugged in according to 13 or 14 . 16. The pluggable connection according to claim 13 , characterized in that the cross-sectional contour of the locking body (S) matches the cross-sectional contour of the small pot-shaped locking recess (T). Vacuum cleaner tube device.   17. Pluggable connection according to claim 16, characterized in that the locking body (S) forms a corresponding blocking facing surface (34) facing the blocking surface (26) of the operating sliding body (17). Vacuum cleaner tube equipment.   The sliding guide opposing surfaces (29, 30) are opposed to the blocking protrusions (25) of the operating sliding body (17) in which the locking body (S) is inclined with respect to the opposite axial directions (e, a). 18. A vacuum cleaner tube device with pluggable connection according to one of claims 1 to 17, characterized in that it is formed. The locking body (S) is guided to the socket part (12) so as to be movable at least substantially in the radial direction, and is movably connected to the socket part (12) at least in opposite axial directions (e, a). 19. A vacuum cleaner tube device capable of being plugged in according to claim 1.   The locking body (S) forms a substantially tongue-like member (Z) cut out from the socket part (12), and the tongue piece base (33) of this member (Z) is particularly the end face of the socket part (12). The vacuum cleaner tube device according to claim 1, wherein the vacuum cleaner tube device is adjacent to (32).

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